Safety-envelop.



Rt W. BROWN.

` SAFETY ENVELO?.

nrmoumn FILED nu: 24, leon.

Pl'd 53.11. 25, 1910.

- 2 sums-snm? 1.

nventoz @Loi buono Y R. W. BROWN.

SAFETY ENVELOP.

APPLICATION FILED 11H24, 1909.

Panam-,ed Jan 25,1910.

2 SHEETS-snm z.

923i ineens BoLaND uw. BROWN, or Prrrsron, name.

SAFETY-ENVELQP.

Specification of Letters Patent.

Patented Jan. 25, 1910.

Application filed May 24, 1999. Serial No. 498,102.

I To all whom it Amay concern:

'citizen of the United States, residing at culiar formation of blankPittston, in the county of Kennebee and State of Maine, have inventedcertain new and useful Improvements in Safety-Envelops, of which thefollowing is a specification.

The object of this invention is to provide an envelop designed to securethe utmost safety -in sending communications by mail.

vThe invention resides particularly in a pewhich when folded properlywill provide an envelop body composed of sides of double thickness andaletter-receiving pocket disposed in the body and adapted to be sealedeffectively in such position.

For a fullunderstanding of the invention, reference is to be had to thefollowing detail description and to the accompanying drawings, in which-.Figure 1 is a plan view of the blank from which an envelop embodyingthe invention is made; Fig. 2 is a view similar to Fig. 1, partly brokenaway, and showing the reverse side of the blank; Fig. 3 is a plan viewshowing the tiaps of the body fold as when folded in the preliminaryfolding of the enveloo; Fig. 4 shows the body of the envelop having thebody fold arranged in theI position assumed thereby in completing thefolding of the envelop; Fig. 5 shows the flaps of the body of the blankfolded, the letter-rcceiving ocket being in a position ready to receivet e letter; Fig. 6 is a view of the en- 'velop closed; Fig. 7 is a lonitudinal sectional view on the line 7-7 o Fig. 6; Fig.

. 8 1s a transverse section on the line 8-8 of Fig. 6, and Fig. 9 is adetail sectional view showingmore clearl the 'form of the metallic ardof the auxiliary sealing flap.

aroughout the following detail descriptionancl on the several figures ofthe drawings similar parts are referred to by like -enee characters.Erzely describing the specific construction of the invention the numeral1 denotes the body portion of the blank from which the envelo is formed,said body being provided with tiie body fold 2 having an extension 3adapted to be folded upon itself to form a letter-receiving pocket. Thebody 1 of the blank has the main sealing flap 4 at one edge and saidflap 4 has an auxiliary sealing flap or tab 5 of peculiar form. Endflaps 6 are provided for the body 1 and similar end flaps 7 are providedfor the body fold 2.

A description of the folding of the blank will fully bring out-theconstruction or form of the envelop when in condition for use. Theextension 3 of the body fold 2 is rst folded upon itself so that itsmucilaged edge is adherently applied to the portion 3 of .saidextension, the fold line of the extension being indicated at 3% Theletter-receiving pocket is formed by folding the extension as abovedescribed and this done the end liaps 7 are folded upon each other asshown in Fig. The next step is to fold the body fold 2 so that it restsupon the body l of the blank as shown in Fig. 4, and when so arrangedthe gummed portions 7' of the lia 7 adhere to the body 1 of the blankand said flaps with the body l afford a double thickness for the addressor front side of the envelop. The pocket formed by the extension 3 iskept exposed and the nain end fia s 6 are folded so as to iuclose thebody foFd 2 and liaps 7, as hownin Fig. 5, suitable adhesive materia'being ap nied to the edges of the flaps, 6 so that the .will adhere tothe outer side of the body fold 2. The flaps 6 with the body fold 2afford a ldouble thickness for the rear side of'tle envelop on whichside the sealing flap 4 is adapted to fold topermit the auxiliarysealing a y5 to pass through slits 8 provided in the old 2 and flaps 6.Prior to sealing the envelop as shown in Fig. 6, the letter or missiveis placed in the receiving pocket or extension 3, the ends of which areopen, and said pocket is folded inwardly' into the space between theparts 2 and 6 and the parts 1 and 7.

To prevent the flap 5 from being disturbed or detached by moisture in anattempt to open the envelop, said Hap 5 is folded upon itself andbetween the folds is a metallic guard 9 in the form of tinfoil orequivalent material through which moisture will not pass. The flap' 5when passed through the slits 8 will adhere to a side of the pocket 3and the inner portion of the fold 2, since both sides of the flap 5 haveadhesive material applied thereto. A missive arranged in the pocket '3is interposed between two thicknesses of material comthe body foldrising the body of the envelop and the likelihood of openingof thecontoiner without detection is practically eliminated.

Having thus described the invention, what is claimed :iss new is:

1. An envelop comprising a body having a sealing flap adapted to closethe same, and a pocket forming an extension of the body and foldablethereinto prior to Closing the envelop by the sealing flap, said pocketbeing open :it its ends and closed at the sides. A2. A safety envelopinode from nn integral blank consisting of a body portion havlng endflaps nnd provided with a. bodyv fold atone edge thereof, end flapsfolded thereon and adhesively connected at the free edges thereof, theend aps and body fold being bodily folded against the body portion ofthe envelop ond the u per edges ofthe end flaps of said body fold eingradhcsii'ely connected at with the upper edge of the body portion, theend flaps of the body portion being folded so as to inclose the bodyfold and beine' ndhesively connected together and to said ody fold atthe outer side of the latter, the up )er edge of the body portion beingprovided with a Sealing flap, and the upper edge of having an'integralletter receiving pocket closed at tbe. sides of the envelop but open attbe ends, the said pocket being folded into the space between the bodyfold and the end flaps thereof.

3. A safety envelop comprising a body one side snid body fold having lconsisting of front and rear sides lin g end flaps folded to providespaced double thicknesses of material forming said sides, aletter-reeeivin0r pocket forming a eontinnn` tion of the bony foldnblehereinto, said letter receiving pocket being open nt its er: and e apintegral with 'the body :infl trating one of its sides for proventiplacement. of the letter-reeeiving; poeizet seid flap being :idnesivelysecured to the poY t within the body or" tbe envelop.

4. A safety envelop n le iront a blank comprising a body portimr :1nd e:body folded tbereagjninsf, said 'bo-.ly'fl'old end llaps adheringr tothe body body portion having end flaps the body fold, an integral lettoelret closed except :it its ends l y tbe body fold and loldnble intbetween the bodyy fold and body pe" the envelop, and n .eenling liep forthe envelop.

5. An envelop having a sealing .flop folded upon itselrr and having thefolded portions :i in lie guard, and an adhesive to said sealing flap.

In testimony whereof l affix my signature in presence of two Witnesses.

ROLAND 5.7. BRO WN.

re proof n bstnnee :applied .1 3

lVitnesses Bessin MAn'rlN, xHoIuCn S. BROWN.

